organisms that attack the beet field. The liquid
used should be composed of 3 per cent. copper sulphate and 3 per cent.
lime, dissolved in water; fifty gallons are sufficient for one acre;
cost per acre, every item included, is 56 cents. The normal vitality
of the plant being restored, there follows an increased sugar
percentage. Ordinary liquid ammonia may be advantageously used to kill
white worms and insects that attack beets; two quarts of the diluted
chemical are used per square yard, and the cost is $12 per acre (?)
GERMANY.
Calcic salt elimination from beet juices is a problem not yet
satisfactorily solved. Since the early history of beet sugar making,
it has been noticed that calcic salts render graining in the pan most
tedious; hence repeated efforts to reduce to a minimum percentage the
use of lime during defecation. In all cases it is essential to get rid
of inverted sugar. The difficulty from excess of lime is overcome by
adding it now and then during carbonatation; but other means are found
desirable; and phosphoric acid, magnesia, soda, etc., have been used
with success. Recent observations relating to the action of soda upon
calcic sulphates, calcic glucates, etc., are most important. Certain
citrates have a retarding influence upon calcic sulphates.
An alarm contrivance to announce the passage of juices into condensing
pipes has rendered considerable service in beet sugar factories.
A process for refining sugar in the factory, at less cost than it is
possible to make raw sugar by existing processes, deserves notice.
Sugars by this new method test 99.8, and sirups from the same have a
purity coefficient of 70. Weight of dry crystals obtained is said to
represent 66 per cent. of _masse cuite_ used. The additional cost of
the process is $30 to $40 per centrifugal. Concentrated juice or sirup
may be used as _cleare_ in centrifugals; this sirup should have a
density of 1.325 (36 deg. B.) at 113 deg. to 122 deg. F., so as not to redissolve
the sugar. Sirup should not be used until all adhering sirup of _masse
cuite_ has been swung out. The sirup, after passing through
centrifugals, may be sent to second carbonatation tanks and mixed with
juices being treated.
The larva of an insect, known as _sylpha_, has attacked beet fields in
several parts of Saxony. The effect upon the root is a decrease in
foliage, followed by late development of the beet, with corresponding
reduction in sugar percentage. Chic
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